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Finding the Fourth Proportional to 479,298.87, 664,228.55 and 472,533.75

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Solution

The fourth proportional to 479,298.87, 664,228.55 and 472,533.75 is: 654,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,298.87 : 664,228.55 = 472,533.75 : x
  2. Step 2: Convert to fraction form
    479,298.87/664,228.55 = 472,533.75/x
  3. Step 3: Cross multiply
    479,298.87x = 664,228.55 × 472,533.75
  4. Step 4: Simplify right side
    479,298.87x = 313,870,408,769.90
  5. Step 5: Solve for x
    x = 313,870,408,769.90/479,298.87
  6. Step 6: Final answer
    x = 654,853.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.